Mold.



J. M. ROTH.

MOLD.

APPLICATION FILED MAR. 27, 1915.

Patented Dec. 21, 1915.

2 SHEETS-SHEET I.

Ema/who;

v JfiCoB PLROTH.

J; M. ROTH.

MOLD.

APPLICATION ElLED MAR. 27, I915.

2 SHEETS-SHEET 2.

1,165,025. I 'Patented Dec. 21, 1915. 7

. M Q 3- t 3* Y I v JACOB M. ROTH, PITTSBURGH, PENNSYLVANIA. H

MOLD.

Specification of Letters Patent.

Patented Dec. 21, 1915.

Application filed March 27, 1915. Serial No. 17,486.

To all whom it may concern. v

Be itv known that I, JAoos M. ROTH, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Molds, of which the following is a specification, reference being had to the accompanying draw- Ihis invention relates to molds and more particularly to metal molds.

The present invention has for its primary object to provide improved means whereby an interior or exterior metal lining may be quickly and perfectly" welded upon a core body, Said welded metals being subsequently drawn and fashioned or shaped into various commercial articles.

It is another very important object of the invention to provide a mold of the above type which is of such construction that the formation of air or blow holes in the poured metal is precluded and a very compact or homogeneous casting produced.

I More specifically stated, the present in vention is designed with'a view to producing a mold structure having means for positionmg a core therein and into which the metal may be uninterruptedly poured, said mold being provided with means to admit of the escape of the air and gases displaced by the molten metal.

' It is an additional object of the invention to provide a metal mold includinga body section and a removable head section, said body section being formed at its base to provide a seat for the corebody, said head section being recessed to permit of the expansion of the core when heated by the molten metal and having two openings therein into one of which the metal is poured into the body of the mold while the air escapes through the other of said openings, the molten metal rising in the openings,

in the head section of the mold and creating a hydrostatic pressure upon the molten metal aroundv the core body.

With the above and other objects in view, my invention consists in the novel features of construction, combination, and arran ment of parts to be hereinafter more fully described, claimed, and illustrated in the accompanying drawings, in which, I

Figure 1 is a vertical section through a .desired cross-sectional configuration.

fied construction of the mold for casting an exterior metal lining upon a tubular core body; "Fig. 7 .is a similar view of another form of the invention to be used for casting an interior lining upon a tubular core; and

Fig, 8 is a vertical section illustrating still another type of the mold employed for the simultaneous casting of interior and exterior metallic linings upon a tubular core.

In the accompanying drawings, I have illustrated one practical embodiment of my invention, wherein 5 designates the body section of the mold which may be constructed from cast iron, steel, carborundum, alundum, or other material. This mold body is of elongated form, as shown, and may be round, square, hexagohal, or of any 01%151 e core receiving chamber 6 of the mold is provided at its 'base with an annular inclined or beveled shoulder 7 communicating with the seat 8 which is adapted to receive the lower end of the steel or iron core, indicated at O. This core seat is of smaller diameter than the diameter of the chamber 6, and the beveled or inclined shoulder 7 serves to direct the lower end of the core into and upon said seat when the same is inserted into the mold sothat the core body will be concentrically spaced from the mold wall. Upon the upper end of the body 5' of the mold and at diametrically opposite points, the mold wall is formed with the outwardly projecting lips or lugs indicated at 9, whereby opposed recesses 10 are produced in the upper edge of the mold. The particular purpose of these recesses will be hereinafter referred to. In the top face or upper edge of the body 5 of the mold, a continuous groove or channel 11 is formed, said groove extending in concentric relation to the perimeter of'the mold bod In conjunction with the body 5 o the indicated by the numeral 12, is employed;

- mold, a removable head section, generally.

the upper end of the mold body. At the base of this flange 15 and in spaced relation thereto, a continuous rib 16 is formed, said rib being adapted for engagement in the groove or channel 11 in the upper edge of the mold body 5.

17 designates a packing strip which is first I arranged in the channel 11. Thus, when the heavy head section 12 of the mold is arranged in position, the rib 16 engaging upon said packing strip forces the same tightly into the groove or channel, thus producing a fluid-tight connection between the opposed end faces of the two sections of the mold. The rectangular body 13 of the removable mold head is formed with spaced longitudi-' nally extending openings 18 therein, preferably, though not necessarily, of the crosssectional form shown in Fig. 3. These openings taper longitudinally and gradually decrease in cross-sectional area from the upper end face of themold head to the bottom face thereof. The integral web 19 separates these openings from each other and, owing to the tapering form of said openings, the web 19 consequently gradually increases in thickness from its upper to its lower end. This lower end of the web 19 terminates at a point slightly above the seating face of the head 12 which rests upon the upper end of the mold body 5 whereby a recess, indicated at 20, is formed for the reception of the upper end of the core C. The lower end face of the web 19 is tapered or inclined upwardly from its center, as shown at 21, to the lower ends of the respective openings 18. At the opposite ends of the recess 20, the walls of the,

mold head between the lower ends of the openings 18, are outwardly beveled or inclined, as at 22, to the bottom seating face of said-head. It willbe observed, from reference to Fig. 1 of the drawings, that when the head is in place upon the upper end of the,

mold body, the top face of the core member C, within the recess 20, is spaced from the lower end face of the web 19. The lower ends of the openings 18 through the mold head are disposed in registering relation with the recesses 10 at the upper end of themold body 5.

Assuming that the core member C has been arranged within the body of the mold and the head section 12 properly placed in position upon the upper end of said mold body, as shown in Fig. 1, the molten metal is poured into one of the openings 18 in the head section of the mold and gradually collects within the moldchamber 6 around the core- It is to be understood that any suitable flux may be employed for creating a weld or unifacilitatesthe expulsion of such air and gas. 7

Thus, there may bean uninterrupted flow of the molten metal into the mold, and all possibility of the formation of air or blow holes in the metalprecluded, owing to the means which I have provided for the ready escape of the air which is displaced by the inflowing metal. The pouring of the metal continues until the same substantially fills the two openings 18 in the head section of the mold. The filling of these relatively large openings creates a hydrostatic pressure upon the molten metal in the body 5 of the mold so as to closely compact or unite the molecules of the metal and thus form a homogeneous lining or coating around the core C.

The metal core which has been provided with the exterior lining or coating of copper or other metal, in the manner above described, is removed by simply removing the head section of the mold from the body 5, it being understood, of course, that the metal within the openings 18 in said head section is thus cut or broken off from the lining around the core. The rod or billet of metal is now removed from the mold and may be rolled and drawn for manufacture into various commercial articles.

My improved mold is primarily designed for the purpose of casting and welding copper upon a steel body or core. These two metals, after being welded together, may be fashioned into wire to be employed for "arr ous purposes, lightning rods, hoops, and numerous other articles for whichsuch a composite metal might be found partlcularly desirable. It is, of course, apparent that the present invention is, in nowise, restricted to use in conjunction with a core of cyllndrlcal form, but the mold may be employed 1n the provision of such lining sheets upon a core member of polygonal form in cross-section, it being understood, of course, that the mold chamber will be of corresponding shape.

Referring now more particularly to Figs. 6, 7 and 8 of the drawings, it will be observed that I have shown therein, several mold constructions, each embodying the fundamental principle of the device as above set forth, whereby a tubular core may be pro vided with either an exterior or interior me- Fig. 6, the body thereof is of substantially extensions 24 which are integrally connected to the body of saidhead section which is adapted to be arranged upon the upper end of the mold body, as previously explained.

The bores or openings through the spaced portions 24 of the removable head are similar in shape to theopenings 18 shown in Fig. 1,

and communicate at their lower smaller ends with the metal receiving chamber .of the mold body 5. 25 designates the steel tubular body in each end of which a plug 26, preferably of fire clay, is inserted. This tubular body, at its lower end, is seated upon the base wall of the mold chamber and the upper end thereof extends into the circular .of the mold. The lower end of this tubular steel body is seated in an annular groove or channel 30. formed in the upper face of a base 29. This base is also provided with a f central seat or socket 31 to receive the lower posed between the outer wall of the annular recess 30in the base 29 and the outer peripheral face of the tubular body 28. The construction of the head member 33, in other respects, corresponds with the invention as disclosed in Fig. 1 of the drawings, said head being provided with spacedlongitudinally extendingopenings 37 and the recess 38 to receive the upper end of the corerod 32 and permit of the expansion of the same.

In Fig. 8 of the drawings, I have shown still another. mold construction whereby the tubular steel-center or body ofthe composite metal rod to be produced by means of the present invention, is arranged within the mold body and engaged at its lower end upon the annular seat 39 formed upon the base thereof. This bottom face of the mold chamber is also centrally formed with a circular socket or seat 40 to 'receive the lower end of a core rod 41 and concentrically position the same with respect to the tubular body, indicated at 42. The head section 43 of-the mold has the spaced tapering openings 44 formed therein and the lower nar- '-rower end of each of these openings is divided b v a W6b45. The lower face of the mold headbetween the openings 44 has the recess 46 formed therein to receive the upper end of the core 41 and the end face of this core is spaced from the base of said recess for the purpose hereinbefore referred to, While the upper end of the tubular metal body 42 is spaced in a similar manner from the web 45. It will be understood that, in the use of this type of the mold, the molten metal is poured into one of the openings 44 and flows downwardly and upon opposite sides of the web 45 and into the space between the wall of the mold body and the outer face of the tubular body 42 and also into the space between the inner face of this body and the periphery of the core rod 41. Thus, it will be seen that the tubular steel body of the composite metal rod will be simultaneously provided with-the interior and exterior linings of copper or other metal.

From the foregoing description, taken in connection with the accompanying drawsimple, reliable and effective metal mold for quickly and perfectly applying a, lining sheet of copper or other metal to a body of steel or other relatively hard metal. The formation of air holes in themolten metal is effectually obviated by the provision of the means above referred to, whereby the ready escape of air and gas is permitted from the body of the mold. By means of my invention, it will, therefore, be manifest that the molten metal may be continuously poured, into the mold until the. same has become entirely filled. It will also be seen that provision is made for the expansion' of the steel core under the heat of the -molten metal so that the head section of the mold will not beraised or elevated from the upper face o-f the mold body. A substantially fluid-tight joint is also formed between the two sections of the mold so that the escape of the molten metal is obviated.

vand sizes. I have also reserved the priviings, it will be seen that I have produced a i lege of resorting to various modifications in the form, proportion, and arrangement of the several structural features of'my invention. which may be fairly embodied within the spirit and scope of the appended claims.

disposed in said recess.

2. A mold of the character described including a' body, a removable head 'section' adapted to be arranged upon said body and having a pouring opening and an air escape opening, said head being also provided with a recess between said openings to receive the upper end of a rod concentrically arranged in the mold body to permit of the. expansion of the rod when the same is heated by the metalpoured into the mold. Y

3. 'A- mold of the character described in cluding a body, aremovable .head section having a pouring opening and an air escape opening therein, said head being further provided with a recess between the lower ends of said openings to receive the upper end of a metal rod concentrically arranged in the mold body and permit of the expansion thereof when heated by the metal poured into the mold and means for estab-' lishing a fiuid-tight-joint between the contacting faces of themold body and the removable head section. v

4:; A mold of the character described including a mold body-provided with means at its base for concentrically positioning a metal rod therein, a removable head adapted to be-arranged upon the upper end of said body and having spaced openings therein, said mold body being provided with recesses at its upper end-leading from the respective openings in the head section and communicating with the metal receiving mold chamber, themolten metal being poured through one of the openings in said head into said chamber, and the air and gas being expelled from said chamber through the other opening in the head. I

5. A mold of the'character described including a mold body provided with means in its base to receive and concentrically position a metal rod therein, a removable head i adaptedto be arranged upon the upper end of said body and'provided with a recess to receive the upper endof said rod and'permit of its expansion, said head-being further provided with longitudinal openings at opposite sides of said recess through one of. which the molten metal is adapted to be of air and gas in the'mold.

p oured into the mold, the air and gas being expelled from the mold through the other of said openings.

6. A mold of. the character described including a mold body provided with means in its base to receive and concentrically position a metal rod. therein, said body being provided in its top face with a groove to recelve a packing strip, a removable head section having a seating face and a rib formed thereon to engage said packing strip and compress the same within the groove of the mold body, said head having spaced openings therein through one of which the molten metal is poured into the mold body and the air and gas being expelled from the mold through the other of said openings.

7. A mold of the character described including a mold body provided with means on its base to receive and concentrically support a rod therein, a removable head section adapted to be arranged upon the upper end of the mold body and having spaced longitudinally tapering openingsformed therein separated by a medial web the bottom face mold through one of said openings, the other opening in the head permitting of the escape 8. A mold of he character'described including a mold body provided with means in itsbase to re'ceiveand concentrically support a rod in position therein, a core rod seated in said mold, a removable head section adapted to be arranged upon the upper end of the mold body and provided with spaced longitudinally tapering openings to communicate with the chamber of the mold at diametrically opposite points, saidopeningsbeing separated by a medial web having its lower end recessed and its end face beveled in opposite directions toward the respective openings, the opposed walls of said recess at its o'uter'e'nd being outwardly inclined, said recess receiving the upper end of. the rod to permit of its expansion when heated by the metal poured into the mold through one }of said openings, ,the air and gas being expelled from the mold chamber by the inflowing metal through the other of said openings. o

9. In a metalmold for providing a metallic lining upon a metal body, a mold body, a

metal core body in said mold, a pouring head provided with spaced openings and arecess in one end between said openings to accommoda'te the metal body and permit of its pelled from the mold by the entering metal through the other of Said openings.

10. In a metal mold for forming a metallic lining upon a metal body, a mold body, a metal core body seated in said mold, a pouring head adapted to be seated upon the-upper end of the mold body, said head being provided with spaced longitudinally tapering openings and having a recess formed therein between the smaller ends of said openings and connecting the same, the base of said recess being inclined inwardly from the center of the head to the respective openm s, me tal body in the mold and permitting of said recess receiving the end of the its expansion when heated by the molten metal, the metal being poured into the mold body through one of said openings and the 15 JACOB M. ROTH.

-Witnesses:

M. CARLISLE LYDDANE, A. I. HIND. 

